CHRISTOPHER J. KLEIN - 01 Mar 2026 Form 4 Insider Report for W.W. GRAINGER, INC. (GWW)

Role: Director
Signature: /s/ Cherita Thomas, by POA from Christopher J. Klein, Director
Issuer symbol: GWW
Transactions as of: 01 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 03 Mar 2026, 14:46:44 UTC
Previous filing: 03 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
KLEIN CHRISTOPHER J	Director	100 GRAINGER PARKWAY, LAKE FOREST	/s/ Cherita Thomas, by POA from Christopher J. Klein, Director	03 Mar 2026	0001257210

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	GWW	Common Stock						65	01 Mar 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GWW	Deferred Stock Units	Award	$0	0	0%	$1144.73	439	01 Mar 2026	Common Stock	0		Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	1-for-1
F2	The number of deferred stock units acquired was less than one (1) deferred stock unit equivalent.
F3	The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.